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Finding the Fourth Proportional to 199,079.46, 298,509.03 and 79,014.78

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Solution

The fourth proportional to 199,079.46, 298,509.03 and 79,014.78 is: 118,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,079.46 : 298,509.03 = 79,014.78 : x
  2. Step 2: Convert to fraction form
    199,079.46/298,509.03 = 79,014.78/x
  3. Step 3: Cross multiply
    199,079.46x = 298,509.03 × 79,014.78
  4. Step 4: Simplify right side
    199,079.46x = 23,586,625,333.46
  5. Step 5: Solve for x
    x = 23,586,625,333.46/199,079.46
  6. Step 6: Final answer
    x = 118,478.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.